One big difference between now and earlier decades is
that "something
new" shows up every 5 minutes now, whereas before new things showed up
at a slower rate. It's a consequence of exponential technological
change creating an exponential increase in novel items.
You can download all 10K+ MAME games, and only play Pengo (1982, SEGA).
The rate of news never was SO fast!
There was a time, within the memory of many (most?) on
this list, when
you could stay current with the entire field of computer science.
When I graduated college in 1986, it was still possible to stay
current with the entire subfield of computer graphics. Now it is
impossible to stay current with the subfield of computer graphics that
is computer gaming.
And each time I set my eyes on that, I still think this is alien
technology, and John Carmack is from another galaxy.